Island



(No Model.)

G. W. DAVIS. WOOL DRIER AND GARBONIZER.

Patented Nov. 12,1895.

UNITED STATES PATENT OFF CE.

GEORGE w. DAVIs, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR OF FOUR- FIFTHSTO THOMAS MABBETT, HENRY J. MABBETT, CHARLEs L. DAVIS, AND wALDO E.DAVIs, OF SAME PLACE.

WOOL DRIER AND CARBONIZER.

SPECIFICATION forming part of Letters Patent No. 549,497, dated November12, 1895.

Application filed March 18, 1895. Serial No. 542,158. (No model.)

To all whom, it may concern:

Be it known that I, GEORGE WV. DAVIS, of Providence,in the State ofRhode Island,have made certain new and useful Improvements in Machinesfor Drying and Carbonizing \Vool; and I do hereby declare that thefollowing specification, taken in connection with the drawings making apart of the same, is a full, clear, and exact description thereof.

Figure 1 is an elevation of my improved device, showing the chamber invertical section. Fig. 2 is a vertical cross-section on line L L. Fig. 3is a top View with the chamber in horizontal section. Fig. 4 is a topand exterior I 5 view of the chamber. Fig. 5 is an end elevation showingdevices for drawing the air from the chamber. .Fig. 6 is an elevation ofthe opposite end,showing air-inlet. Figs. 7 and 8 show the arrangementof hooks or arms upon the interior of the rotating cylinder.

The object of my invention is to dry and carbonize the wool rapidly andthoroughly and with little labor; and it consists in the construction,arrangement, and operation of the elements hereinafter described.

In the drawings, A is a large cylinder, made of wire and located withina close chamber B, and is attached to an axis 0, the latter beingsupported in suitable bearings and rotated 0 through a pulley D.

Upon three sides of the chamber B, and also upon the bottom thereof, area series of steampipes. The precise arrangement,however, of thesteam-pipes is not material, provided an 3 5 entrance to the cylinderthrough a door or opening E, Fig 2 is preserved.

F is a fan by which air is drawn from the bottom of the chamber Bthrough a pipe K and carried or forced off through a pipe G.

I, Fig. 6, is an air-inlet, also at the bottom of the chamber B andopposite the exhaust, pipe K. Upon the inside of the wire cylinder A areseveral rows of horizontally-arranged hooks or arms J, as shown in Figs.7 and 8, one end of which may be screw-threaded, the

opposite end being bent upwardly at an angle.

The operation of my invention is as follows: While the machine is atrest the door E of the chamber B is opened and the wool introduced tothe cylinder A through a suitable aperture therein, the aperture anddoor E being closed and secured before the machine is started. Thecylinder A is then rotated by means of the axis 0 and pulley D, beforementioned. As the cylinder A rotates, the wool 5 5 therein is caughtsuccessively upon the several series of hooks J and tossed and stirredup. During this manipulation of the wool the hot air within the chamberis caused to circulate freely through the fiber of the wool. As thisoperation goes on, the air within the chamber B becomes laden withmoisture and by its increased weight falls to the bottom of the chamber,where it is drawn off by the exhaust-fan F, fresh dry air entering atthe airinlet I to be heated, charged with moisture, and drawn Off untilthe wool is thoroughly dry.

When the moisture in the wool has been removed and there is no longerany moist air in the bottom of the chamber B, the fan F is stopped andthe cylinder continues to rotate during the carbonizing process, whichis thus made simply a continuation Of the drying process, minus thecirculation of the air, the wool remaining in the cylinder and requiringno hand manipulation and entailing no loss of time.

A circulation of dry hot air may be maintained during the carbonizingprocess, if it is desired, by permitting the fan F to continue andreversing the position of the dampers shown in horizontal pipe M, Fig.l.

lVhat I claim as my invention, and wish to secure by Letters Patent, is-

In combination with the casing B, one side of which is provided with adoor of a cylinder A j ournaled in the casing and provided with anopening in the side to register with the door, an inlet and an outletpipe communio eating with the bottom of the casing, the inlet beingprovidedwith a valve and the outlet being provided with a fan, and athird pipe communicating with the top of the casing, said third pipebeing provided with two valves or 5 dampers and the outlet pipecommunicating with said third pipe between the two dampers, whereby theair may be caused to circulate through the casing or be discharged fromthe third pipe, and a steam pipe upon three sides of the casing and thebottom, substantially as set forth.

GEORGE XV. DAVIS.

IOO

Witnesses:

WALTER B. VINCENT, A. E. MACLAINE.

